Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
  • F01P3/00—Liquid cooling
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
  • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
  • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
  • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
  • F28F3/044—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being pontual, e.g. dimples
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
  • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
  • F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
  • F28D1/0308—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other
  • F28D1/0325—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
  • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
  • F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
  • F28D1/0308—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other
  • F28D1/0325—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another
  • F28D1/0333—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another the plates having integrated connecting members
  • F28D1/0341—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another the plates having integrated connecting members with U-flow or serpentine-flow inside the conduits
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
  • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
  • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
  • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
  • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
  • F28D9/0056—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another with U-flow or serpentine-flow inside conduits; with centrally arranged openings on the plates
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
  • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
  • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
  • F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
  • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
  • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
  • F28D2021/0082—Charged air coolers
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F2225/00—Reinforcing means
  • F28F2225/04—Reinforcing means for conduits

Definitions

• the invention relates to a heat exchanger, in particular for a motor vehicle.
• a heat exchanger for example used in the automotive industry and more specifically in an internal combustion engine of a motor vehicle, comprises heat exchange elements and fluid flow in which fluids exchanging heat exchange between them .
• fluid associations can be envisaged, be they liquids and / or gases.
• an "air-water” exchanger such as a charge air cooler, may be provided.
• the heat exchange elements may for example comprise flat tubes, gas flow disrupting vanes and / or fluid flow disruptors or the like.
• Exchangers comprising a bundle of plates arranged in pairs parallel to each other on one or more rows parallel to each other.
• the pairs of plates are arranged to define on the one hand a flow passage of a first fluid and on the other hand an interval between two pairs of adjacent plates through which a second fluid can flow by exchanging heat. with the first fluid.
• each plate can define two or more circulation passes. Each pass is defined by a traffic channel.
• a flat plate heat exchanger plate is generally defined with four passes.
• the object of the invention is to further improve the performance of heat exchangers known thermal, in terms of reduction of mechanical stresses and losses of load.
• the invention relates to a heat exchanger for cooling charge air, said exchanger comprises at least one flat tube for the circulation of a fluid, formed by assembling a pair of plates delimiting a first channel and a second circulation channel, such that said channels communicate with each other at one end to define a substantially U-shaped circulation of said fluid, characterized in that at least one plate comprises at least a first rib and a second rib generally shaped substantially in "L"; and in that said at least one first rib, respectively second rib, is arranged in said first channel, respectively second channel, of circulation.
• Said exchanger may further comprise one or more of the following characteristics, taken separately or in combination:
• said at least one plate comprises a central rib, said central rib projecting into said at least one flat tube for delimiting the first and second circulation channels;
• said at least first and second ribs are symmetrical with respect to said central rib;
• said at least one first rib extends substantially at the center of the width of said first channel, and said at least one second rib extends substantially at the center of the width of said second channel;
• said at least one plate comprises a fluid inlet orifice arranged in said first circulation channel and a fluid outlet orifice arranged in said second circulation channel, and said at least one first rib is substantially aligned with respect to the center.
• said inlet port and said at least one second rib is substantially aligned with respect to the center of said outlet port;
• said at least one plate has a plurality of projections forming projections in the flow passage of said fluid
• the invention also relates to a flat tube for heat exchanger according to any one of the preceding claims, said tube being formed by the assembly of a pair of plates delimiting a first channel and a second channel of circulation, such as said channels. communicate with one another at one end to define a substantially U-shaped circulation of said fluid, characterized in that at least one plate comprises at least a first rib and a second rib of generally "L" -shaped general shape; said at least one first rib, respectively second rib, being arranged in said first channel, respectively second channel, circulation.
• Said tube may further comprise one or more of the following characteristics, taken separately or in combination:
• said plates respectively comprise a central rib, and the central rib of a first plate is in contact with the central rib vis-à-vis the second plate;
• said first and second ribs of the first plate are respectively in contact with said first and second ribs vis-à-vis the second plate.
• the invention also relates to a plate for a heat exchanger flat tube delimiting a first channel and a second circulation channel, said channels communicating with one another at one end so as to define a substantially U-shaped circulation of said fluid, characterized in that said plate comprises at least a first rib and a second rib of generally "L" shape; said at least one first rib, respectively second rib, being arranged in said first channel, respectively second channel, circulation.
• FIG. 1 represents a side view of a plate heat exchanger
• the invention relates to a heat exchanger, in particular for cooling the supercharging air for a heat engine, such as a motor vehicle engine.
• Such an exchanger may be an exchanger called "air-water”, that is to say an exchanger in which the fluids that exchange heat are air and water.
• the water is preferably water from the so-called “low temperature” cooling circuit of said engine; it is typically brine.
• FIG. 1 represents, seen from the side, a heat exchanger 1.
• the exchanger 1 has for example a generally parallelepipedal general shape.
• the exchanger 1 comprises a stack of flat tubes 3.
• the flat tubes 3 may be alternately arranged with interleaves 5.
• a spacer 5 is for example formed from a corrugated thin film heat-conductive, the ridges of which are in alternating contact with the two flat tubes 3 on the other hand. else of tab 5.
• An air flow can flow through the spacers 5 to exchange heat with the fluid flowing in the flat tubes 3.
• the spacers 5 disrupt the flow of air so as to increase the exchange surface.
• all the flat tubes 3 are identical.
• Each tube is for example formed by assembling a pair of plates 7 in gard.
• the exchanger 1 is therefore of the plate type.
• the assembled plates 7 define between them a passage 9 for the flow a fluid, in particular a cooling fluid.
• a passage 9 may have a substantially constant thickness.
• a plate 7 (better visible in FIG. 2) has a generally rectangular shape with a length L and a width 1.
• the plate 7 has a width 1 less than or equal to
• the plate 7 has for example a length L between 120 mm and 280 mm.
• Each plate 7 has orifices forming a fluid inlet 11 for introducing fluid into the fluid flow passage 9 and a fluid outlet 13 for discharging the fluid.
• a plate 7 further comprises at the level of the fluid inlet 11 and the fluid outlet 13 of the plates 7 of the bulges 15 (see FIG. 1). These bulges 15 are oriented towards the outside of the fluid flow passage 9.
• the bulges 15 of a plate 7 communicate with the bulges 15 of a plate 7 of a pair of neighboring plates 7. Due to the bulges 15, the stack of flat tubes 3 creates, between two pairs of adjacent plates 7, a gap. These intervals may be lined with an interlayer 5 as described above.
• the exchanger 1 comprises respectively two inlet and outlet pipes 17, for the passage of a fluid. These pipes 17 communicate respectively with the bulges 15 and associated orifices 11, 13 of the plates 7, to allow the circulation of the fluid between the plates 7.
• the plates 7 are made from stamped sheet metal.
• Such stamped plates 7 have a substantially bowl shape. Each plate 7 has a peripheral edge 19 forming a contour of the plate 7.
• the plates 7 of the same pair are joined together in a sealed manner over their entire contour at their respective peripheral edge 19 to define a passage 9 for the flow of the fluid.
• the plates 7 are arranged so that their concavities are facing each other.
• the plates 7 are sealingly connected, for example by brazing.
• a stamped plate 7 as shown in FIG. 2, defines two circulation passes.
• the plate 7 comprises a central rib 21.
• This central rib 21 This central rib
• This central rib 21 is arranged on the inner surface of the plate, that is to say facing the fluid flow passage 9, so that the central rib 21 forms a projection in the flow passage 9. fluid.
• the central rib 21 is a longitudinal rib joining two plates 7 of a pair so as to define circulation passes for the fluid.
• This separation delimits a first circulation channel 23 and a second circulation channel 25 thus forming two passes with a "U" circulation between the inlet 11 and the fluid outlet 13.
• the first pass is defined by the first flow channel 23 and the second pass is defined by the second flow channel 25.
• this central rib 21 may have a rounded end 27.
• Such a plate 7 further comprises at least a first secondary rib 29 and at least a second secondary rib 31. These two secondary ribs 29 and 31 provide a mechanical reinforcing function of the plate 7.
• the first rib 29 is arranged in the first circulation channel 23 so as to divide it into two sub-channels 23a and 23b.
• the second secondary rib 31 is arranged in the second fluid circulation channel 25 so as to divide it into two sub-channels 25a and 25b.
• the secondary ribs 29,31 have a generally "L” shape. This "L” shape makes it possible to combine mechanical strength and reduction of pressure drops. Indeed, using secondary ribs substantially “L”, the Applicant has found a better compromise between mechanical stress and loss of loads.
• the secondary ribs 29, 31 substantially in "L" may have rounded edges, so as not to have a sharp angle, to better balance the flow of the fluid.
• these two ribs are arranged on either side of the central rib 21.
• first rib 29 and the second secondary rib 31 are symmetrical with respect to the central rib 21.
• the secondary ribs 29 and 31 are respectively arranged substantially at the center, in the width direction, of the associated circulation channel 23, 25.
• the first rib 29 extends substantially at the center of the width of the first channel 23, and the second rib 31 extends substantially at the center of the width of the second channel 25.
• first rib is in the illustrated embodiment substantially aligned with respect to the center of the inlet orifice 11.
• the second rib is substantially aligned with respect to the center of the outlet orifice 13.
• the plate 7 may still have a multitude of bosses 33 on its inner surface. Thus, these bosses 33 project in the passage 9 of the fluid flow.
• the bosses 33 are for example brazing points.
• This arrangement is particularly suitable for the plates 7 of width less than 100mm.
• the Applicant has found a reduction in mechanical stresses of up to 35% by using such plates 7 according to the invention, compared to stamped plates defining two passes but not having the secondary ribs "L" substantially in the middle two passes.
• This new type of plates 7 in two passes subdivided by ribs in "L" thus allows to further increase the thermal performance of the exchanger 1.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=46545396

Family Applications (1)

Country Status (7)

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Family Cites Families (13)

• 2011
  • 2011-07-21 FR FR1156645A patent/FR2978236B1/fr not_active Expired - Fee Related
• 2012
  • 2012-07-20 CN CN201280046065.9A patent/CN103930742A/zh active Pending
  • 2012-07-20 EP EP12737293.6A patent/EP2734801A1/de not_active Withdrawn
  • 2012-07-20 MX MX2014000859A patent/MX2014000859A/es not_active Application Discontinuation
  • 2012-07-20 WO PCT/EP2012/064334 patent/WO2013011136A1/fr active Application Filing
  • 2012-07-20 JP JP2014520680A patent/JP2014522959A/ja active Pending
  • 2012-07-20 US US14/233,783 patent/US20140345838A1/en not_active Abandoned

Non-Patent Citations (1)

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